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epinephrine
Epinephrine... (it used to be called Adrenalin) and most other hormones in the class named Catecholamines. Basically, these control the body's "Fight or Flight" response and prepare the body for action by releasing a rush of glucose and increasing the heart rate.
I would assume that it would be insulin.
adrenaline

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Q: What is a hormone that increases heart rate blood pressure and blood sugar levels in times of emergency?
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Increases in the hormone insulin lead to?

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